Electrical Connections - Webasto Air Top 2000 ST B Installation Instructions Manual

Air Top 2000 ST
11

Electrical connections

All the cables that are not required must be insulated.
NOTE:
If the combination timer is used, a touch-sensitive switch may be
installed in the sleeping section to act as a remote control and improved
convenience. The connections must be made as shown in the circuit
diagrams in Figure 32.
The electrical connection is made as shown in the system circuit
diagram (Figures 30, 31, 32 and 33).
11.1. Connection for installing the heater in a hazchem vehicle (ADR)
To install the Air Top 2000 ST D heater in hazchem vehicles, the
requirements of ADR/RID part 9 para. 9.2.4.7 – Combustion heating
systems, must also be satisfied. The electrical connection is made as
shown in the circuit diagram in Figure 33 or 32.
On vehicles without a power take-off the electrical connection must be
made as shown in the system wiring diagram in Figure33.
NOTE:
The switch S4 must be installed in such a way that a positive potential
is connected to appropriate input of the control module when a pumping
device is switched on.
IMPORTANT
All ADR functions are ineffective if there is no earth at control unit input
X11/2 when the system is switched on.
The control unit continues to run briefly for 40 seconds and then
switches to "fault lock-out" operating mode when a positive voltage is
connected to control unit input X11/2
(auxiliary power take-off on) or the engine is switched off.
IMPORTANT
In accordance with the regulations of the act governing the road/rail
haulage of hazardous materials, heaters are only allowed to be taken
into service with a special manually operated switch fitted in the cab.
If the system is equipped with a combination timer, ensure that contact
4 on the combination timer remains free. The heater can then only be
taken into service using the immediate heat button.
The use of other timers in ADR vehicles is not permitted.
11.2. Heater connection
To connect the wiring harness, remove the control unit cover on the
heater and connected the wiring harness plug to the control unit.
Fig. 23: To remove the control unit cover
NOTE:
Raise the control unit cover on both sides using a blunt blade
(Figure 23 arrows).
Electrical connections
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